Optical cable clamping and sealing device

Abstract

The present invention discloses an optical cable clamping and sealing device, comprising a valve body, a valve cover, a control component, a retaining ring, a lower support ring, an upper support ring, and a valve disc. The valve cover is mounted above the valve body, the control component is mounted on the side of the valve body, the lower support ring, the upper support ring, and the valve disc are located inside the valve body, and the valve disc is fixed between the lower and upper support rings. The present invention can assist in the normal deployment and recovery of optical cables in pressurized pipelines.

Description

Technical Field

[0001] The present invention relates to the field of pipeline belt pressure cable laying, and in particular to an optical cable clamping and sealing device. Background Art

[0002] In recent years, the use of distributed optical fiber as broken wire monitoring sensors in PCCP projects has become a trend. Distributed optical fiber can be laid inside or outside the pipe. Outside-the-pipe laying is typically performed simultaneously with the pipeline installation and is not suitable for pipelines already in service. Inside-the-pipe laying offers two options: draining the pipe and allowing personnel to enter for monitoring; and laying under pressure while the pipeline continues to operate. The draining method significantly increases costs, leading to increasing interest in under-pressure laying within the pipeline.

[0003] During hot-pressed laying, the optical cable is deployed upstream and retrieved downstream. During this process, the cable delivery and retrieval ends must be sealed at all times to prevent fluid from leaking to the surface. Furthermore, after laying, the cable must be clamped to prevent loosening within the pipe due to the flow rate, which could affect detection results. Summary of the Invention

[0004] The present invention provides an optical cable clamping and sealing device, which can assist in achieving the normal deployment and recovery of optical cables in pressurized pipelines, as described below:

[0005] An optical cable clamping and sealing device, comprising: a valve body, a valve cover, a control component, a retaining ring, a lower support ring, an upper support ring and a valve disc.

[0006] The valve cover is installed above the valve body, the control component is installed on the side of the valve body, the lower support ring, the upper support ring and the valve disc are located inside the valve body, and the valve disc is fixed between the lower support ring and the upper support ring.

[0007] Wherein, a cylindrical chamber is provided in the valve body, and a pair of pin holes are provided at the bottom of the chamber for supporting and limiting the lower support ring;

[0008] A fixing hole, a positioning hole and a fixing hole are provided above the valve body. The fixing hole and the positioning hole are used to fix and position the control component. A joint is provided below the valve body.

[0009] Furthermore, the control component includes: a control end, a fixing seat, a worm buffer spring and a positioning pin.

[0010] The control end, worm and locating pin are connected into a rigid body. The control end passes through the fixed seat and leaks out of the valve body. The locating pin is aligned with the locating hole on the valve body and is located inside the valve body. At the same time, the buffer spring is sleeved on the locating pin, with one end supported on the locating hole and the other end supported on the worm to ensure that the worm is in close contact with the fixed seat. The fixed seat is installed on the fixing hole on the valve body.

[0011] The upper support ring is provided with a limiting hole, a fixing hole and a turbine. The circular array of limiting holes is distributed on one side of the support ring. The limiting hole is hemispherical and is used to install the valve disc. Three fixing holes are provided on the same side for installing the retaining ring.

[0012] The turbine is located on the other side of the upper support ring and is coaxial with the upper support ring. The turbine includes a plurality of meshing teeth for meshing with the worm to convert the rotation input from the control end of the control component into the rotation of the upper support ring.

[0013] Furthermore, the valve flap includes: a ball joint, a rubber body and a frame.

[0014] The ball joints are located at both ends of the skeleton, and the rubber body is wrapped around the skeleton, forming a spindle hammer structure that is thin in the middle and thick at both ends. The cross-sectional angle is less than 180 degrees and greater than 90 degrees, and is made of soft material.

[0015] Among them, the lower support ring is provided with a limiting hole and a positioning pin. The structure and distribution of the limiting holes are the same as those of the limiting holes on the upper support ring. The ball joints at both ends of the valve disc are respectively installed in the corresponding limiting holes on the lower support ring and the upper support ring. The ball joints fit the hemispherical surface of the limiting hole, and a retaining ring is provided on it, which is fixed to the lower support ring with a fixing part.

[0016] Furthermore, the valve cover is provided with a joint, a fixing hole and a center hole on the joint. The fixing hole is used to connect with the valve body, and the center hole is used to thread the cable. The center hole is coaxially aligned with the center hole on the joint below the valve body.

[0017] The beneficial effects of the technical solution provided by the present invention are:

[0018] 1. The optical cable clamping and sealing device can realize the sealing of the optical cable during the laying process, and the clamping and loosening function of the optical cable after laying;

[0019] 2. The optical cable clamping and sealing device can achieve self-locking through the worm gear structure; it adopts multiple spindle valve disc structures to not only achieve sealing, but also avoid damage to the optical cable through the central circular telescopic space;

[0020] 3. The optical cable clamping and sealing device has a compact structure and high reliability, and can be used for long-term cable threading in pressurized pipelines. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural diagram of an optical cable clamping and sealing device;

[0022] Figure 2 is a cross-sectional view of an optical cable clamping and sealing device;

[0023] Figure 3 It is the structural diagram of the control component;

[0024] Figure 4 The valve body structure diagram;

[0025] Figure 5 This is a structural diagram of the upper support ring;

[0026] Figure 6 It is the structural diagram of the valve disc;

[0027] Figure 7 This is the installation principle diagram of the valve disc;

[0028] Figure 8 This is a working principle diagram of an optical cable clamping and sealing device;

[0029] Figure 9 A top view of an optical cable clamping and sealing device;

[0030] Figure 10 This is the structural diagram of the valve cover.

[0031] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0032] 1: Valve body; 10: Chamber; 11: Pin hole;

[0033] 12: Fixing hole; 13: Positioning hole; 14: Fixing hole;

[0034] 15: Connector; 2: Valve cover; 20: Connector;

[0035] 21: Fixing hole; 22: Center hole; 3: Control component;

[0036] 30: Control terminal; 31: Fixed seat; 32: Worm;

[0037] 33: buffer spring; 34: positioning pin; 4: retaining ring;

[0038] 40: fixing piece; 5: lower support ring; 50: limiting hole;

[0039] 51: Positioning pin; 6: Upper support ring; 60: Limiting hole;

[0040] 61: fixing hole; 62: turbine; 7: valve disc;

[0041] 70: ball joint; 71: rubber body; 72: skeleton;

[0042] 73: Section angle; 8: Optical cable. DETAILED DESCRIPTION

[0043] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention are described in further detail below.

[0044] In order to overcome the above problems encountered in pipeline pressure laying, see Figures 1 to 9 An embodiment of the present invention provides an optical cable clamping and sealing device, including: a valve body 1, a valve cover 2, a control component 3, a retaining ring 4, a lower support ring 5, an upper support ring 6 and a valve disc 7.

[0045] The valve cover 2 is installed above the valve body 1, the control component 3 is installed on the side of the valve body 1, the lower support ring 5, the upper support ring 6 and the valve disc 7 are located inside the valve body 1, and the valve disc 7 is fixed between the lower support ring 5 and the upper support ring 6.

[0046] Among them, such as Figure 2 、 3 As shown, the valve body 1 is provided with a cylindrical chamber 10. A pair of pin holes 11 are provided at the bottom of the chamber 10 to support and limit the position of the lower support ring 5. A fixing hole 12, a positioning hole 13, and a fixing hole 14 are provided above the valve body 1. The fixing holes 12 and 13 are used to fix and position the control component 3, while the fixing hole 14 is used to install the valve cover 2. A connector 15 is provided below the valve body 1 for connecting to other devices.

[0047] like Figure 3 、 4 As shown, the control component 3 includes: a control end 30, a fixed seat 31, a worm 32, a buffer spring 33, and a positioning pin 34. The control end 30, worm 32, and positioning pin 34 are connected to form a rigid body. The control end 30 passes through the fixed seat 31 and is located outside the valve body 1. The positioning pin 34 is aligned with the positioning hole 13 on the valve body 1 and is located inside the valve body 1. At the same time, the buffer spring 33 is sleeved on the positioning pin 34, with one end supported on the positioning hole 13 and the other end supported on the worm 32. This ensures close contact between the worm 32 and the fixed seat 31, providing both sealing and buffering functions. The fixed seat 31 is installed on the fixing hole 12 on the valve body 1, sealing and supporting the entire control component 3.

[0048] like Figure 2 、 5 As shown. The upper support ring 6 is provided with a limiting hole 60, a fixing hole 61 and a turbine 62. A circular array of limiting holes 60 is distributed on one side of the support ring 6. In this embodiment, the number is 12. There is no strict limit on the number of limiting holes 60, as long as it is greater than 6. The limiting hole 60 is hemispherical and is used to install the valve disc 7. Three fixing holes 61 are provided on the same side for installing the retaining ring 4. The turbine 62 is located on the other side of the upper support ring 6 and is coaxial with the upper support ring 6. The turbine 62 includes a plurality of meshing teeth for meshing with the worm 32. Its function is to convert the rotation input by the control end 30 of the control component 3 into the rotation of the upper support ring 6.

[0049] like Figure 6As shown, the valve flap 7 comprises a ball joint 70, a rubber body 71, and a frame 72. The ball joints 70 are located at both ends of the frame 72, and the rubber body 71 is wrapped around the frame 72, forming a spindle structure with a narrow center and thick ends. The cross-sectional angle 73 is less than 180 degrees and greater than 90 degrees. The material used is a soft material, preferably fluororubber, nitrile rubber, and silicone rubber. Other rubbers are not further restricted; any soft material is considered to be within the protection range.

[0050] like Figure 7 As shown, the lower support ring 5 is provided with a limiting hole 50 and a positioning pin 51. The structure and distribution of the limiting hole 50 are the same as the distribution of the limiting hole 60 on the upper support ring 6. The ball joints 70 at both ends of the valve disc 7 are respectively installed in the corresponding limiting holes on the lower support ring 5 and the upper support ring 6. The figure only shows the schematic diagram installed on the lower support ring 5. The ball joint 70 fits in the hemispherical surface of the limiting hole 50, and a retaining ring 4 is installed on it, which is fixed to the lower support ring 5 with a fixing part 40. This can limit the movement of the ball joints 70 at both ends of the valve disc 7, but at the same time does not affect the rotational movement of the ball joints 70.

[0051] like Figure 10 As shown, the valve cover 2 is provided with a connector 20, a fixing hole 21, and a center hole 22 located on the connector 20. The connector 20 is used to connect to other components, the fixing hole 21 is used to connect to the valve body 1, and the center hole 22 is used for threading cables. The center hole 22 is coaxially aligned with the center hole of the connector 15 below the valve body 1.

[0052] Preferably, the joint 20 on the valve cover 2 and the joint 15 below the valve body 1 are copy forest joints.

[0053] like Figure 8 、 9 As shown, the optical cable 8 passes through the middle of the valve body 1. In order to achieve the clamping and sealing function of the optical cable, it is necessary to input a rotational torque through the control end 30 on the control component 3. The worm 32 on the control component 3 drives the turbine 62 to rotate, thereby driving the upper support ring 6 to rotate. Under the action of the upper support ring, the ball joint 70 on a group of valve discs 7 connected thereto rotates in one direction. Since the two ends of the valve disc 7 are fixed, the lower support ring 5 moves upward under the drive of the ball joint 70 at the other end of the valve disc 7, as shown in FIG. Figure 8 As shown in , the positioning pin 51 on the lower support ring 5 can only move in one direction under the limiting effect of the pin hole 11, thereby ensuring that the ball joint 70 connecting the valve flap 7 and the lower support ring 5 cannot rotate. Because the ball joint 70 connecting the valve flap 7 and the upper support ring 6 rotates along with the upper support ring 6, the entire valve flap 7 forms a spiral shape. Since the valve flap 7 has a spindle structure, it ensures that two adjacent valve flaps 7 fit tightly together to achieve sealing. Figure 9As shown, the twelve valve flaps 7 form a central circular sealing surface, ensuring that the optical cable 8 passing through the valve body 1 is squeezed under the action of the spiral valve flaps 7, thereby achieving clamping and sealing.

[0054] Unless otherwise specified, the embodiments of the present invention do not limit the models of the components. Any component that can perform the above functions may be used.

[0055] Those skilled in the art will understand that the accompanying drawings are only a schematic diagram of a preferred embodiment, and the serial numbers of the embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An optical cable clamping and sealing device, characterized in that: The device includes: a valve body, a valve cover, a control component, a retaining ring, a lower support ring, an upper support ring and a valve disc, The valve cover is installed above the valve body, the control component is installed on the side of the valve body, the lower support ring, the upper support ring and the valve disc are located inside the valve body, and the valve disc is fixed between the lower support ring and the upper support ring; The control component includes: a control end, a fixing seat, a worm buffer spring and a positioning pin. The control end, worm and positioning pin are connected to form a rigid body. The control end passes through the fixed seat and leaks out of the valve body. The positioning pin is aligned with the positioning hole on the valve body and is located inside the valve body. At the same time, the buffer spring is sleeved on the positioning pin, with one end supported on the positioning hole and the other end supported on the worm to ensure that the worm is in close contact with the fixed seat. The fixed seat is installed on the fixing hole on the valve body. The upper support ring is provided with a limiting hole, a fixing hole and a worm gear. The circular array of limiting holes is distributed on one side of the support ring. The limiting holes are hemispherical and are used to install the valve disc. Three fixing holes are provided on the same side for installing the retaining ring. The worm wheel is located on the other side of the upper support ring and is coaxial with the upper support ring. The worm wheel includes a plurality of meshing teeth for meshing with the worm to convert the rotation input by the control end of the control component into the rotation of the upper support ring; The lower support ring is provided with a limiting hole and a positioning pin. The structure and distribution of the limiting holes are the same as those on the upper support ring. The ball joints at both ends of the valve disc are respectively installed in the corresponding limiting holes on the lower support ring and the upper support ring. The ball joints fit the hemispherical surface of the limiting holes and are provided with a retaining ring on them, which are fixed to the lower support ring with a fixing piece. Wherein, a cylindrical chamber is provided in the valve body, and a pair of pin holes are provided at the bottom of the chamber for supporting and limiting the lower support ring; A fixing hole, a positioning hole and a fixing hole are provided above the valve body. The fixing hole and the positioning hole are used to fix and position the control components. A joint is provided below the valve body. The valve flap includes a ball joint, a rubber body and a frame. The ball joints are located at both ends of the skeleton, and the rubber body is wrapped around the skeleton, forming a spindle hammer structure that is thin in the middle and thick at both ends. The cross-sectional angle is less than 180 degrees and greater than 90 degrees, and is made of soft material.

2. The optical cable clamping and sealing device according to claim 1, characterized in that: The valve cover is provided with a joint, a fixing hole and a center hole on the joint. The fixing hole is used to connect with the valve body, and the center hole is used to thread the cable. The center hole is coaxially aligned with the center hole on the joint below the valve body.

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